Finding the Third Proportional to 539,039.25 and 845,586

Step by Step Solution

1. Step 1: Write the proportion equation
   539,039.25 : 845,586 = 845,586 : x
2. Step 2: Convert to fraction form
   539,039.25/845,586 = 845,586/x
3. Step 3: Cross multiply
   539,039.25x = 845,586 × 845,586
4. Step 4: Simplify right side
   539,039.25x = 715,015,683,396
5. Step 5: Solve for x
   x = 715,015,683,396/539,039.25
6. Step 6: Final answer
   x = 1,326,463.12